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A301954 Number of 5Xn 0..1 arrays with every element equal to 1, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero. 1

%I

%S 0,34,342,7326,120815,2406169,45013365,854043977,16129710295,

%T 305221439281,5771629701788,109164158236088,2064580944616050,

%U 39047423296702605,738499892840155074,13967193695049173564

%N Number of 5Xn 0..1 arrays with every element equal to 1, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.

%C Row 5 of A301951.

%H R. H. Hardin, <a href="/A301954/b301954.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0..0..0..0..0. .0..0..1..1..1. .0..0..0..0..0. .0..0..1..0..1

%e ..0..1..0..1..1. .0..1..0..0..0. .0..0..0..0..0. .1..1..0..1..0

%e ..1..0..1..0..0. .0..0..1..1..0. .1..1..1..0..0. .1..1..1..0..0

%e ..0..1..1..1..0. .0..1..0..0..1. .1..0..0..0..1. .1..0..0..1..1

%e ..1..1..0..0..0. .0..0..0..1..1. .1..1..0..1..1. .0..0..1..1..1

%Y Cf. A301951.

%K nonn

%O 1,2

%A _R. H. Hardin_, Mar 29 2018

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Last modified October 18 23:44 EDT 2021. Contains 348071 sequences. (Running on oeis4.)